The Awan brothers’ server with much of the key evidence to the case has gone missing.

The Epoch Times reported:In a behind-closed-door briefing to the House leadership in September 2016, the inspector general said their activity was suspicious in part because the IT workers had taken steps to conceal their identities.

“Excessive logons are an indication that the server is being used for nefarious purposes and elevated the risk that individuals could be reading and/or removing information,” reads a presentation by the inspector general that was not released to the public.

The inspector general also warned of the risk that the server could be used as a repository to store documents “taken from other offices or evidence of other illicit activity.”

The investigation had uncovered Dropbox accounts installed on at least two Democratic Caucus computers used by the IT workers, against House IT policy.

The two accounts associated with the Dropbox accounts on the computers each contained thousands of files.

“We have not been permitted to view content of the files on these workstations. However, based on the file names, some of the information is likely sensitive,” the presentation says.

The inspector general also warned House leadership that the accounts could have been used to exfiltrate information.

“While file-sharing sites, such as Dropbox, have legitimate business purposes, use of such sites is also a classic method for insiders to exfiltrate data from an organization.”Server Goes Missing

Following a second briefing in late September 2016, in which the House inspector warned the House leadership of “continuing unauthorized access,” the investigation was moved to the Capitol Police in October.

It was not until months later, on Feb. 2, 2017, that the House sergeant at arms banned the IT workers from the House network.The Democratic Caucus server, which had been identified by the inspector general as ground zero of the suspicious activity, had disappeared at that time.